I have a popup blocker but not all surfers do.
I tried it w/o the blocker and the popup is the kind that would make you want to start closing windows.
http://www.thiswillshockyou.com/images/advisory.gif
If thats on the first page dont link it to the first page. Link it to the order form
Preview page loads a bit too long. And have a pic on the front page that says click to preiview or something.